Merge pull request #9 from Jvxtv/movimento

- Apaga a trail box quando gravada uma nova;
Merge pull request #10 from Jvxtv/movimento

- Only adds point to trail if touch is out of the box or image;
Merge pull request #11 from Jvxtv/movimento

Code coments
Merge pull request #12 from Jvxtv/movimento

- Inicial movement;
Merge pull request #13 from Jvxtv/movimento

- Added touch detection;
huge refactor, mostly coding standards
Merge pull request #14 from tmpduarte/refactor

huge refactor, mostly coding standards